These radios were designed in the mid 1930’s. Transmitters utilize a MOPA (Master Oscillator Power Amplifier) architecture supporting AM phone and CW (aka Morse code) transmission. Receivers use a single-conversion heterodyne architecture similar to that of big wood console radios of the era. Octal tubes were used as the active devices and the operational frequencies did not exceed 20 MHz, which was considered a high frequency for the mid 1930’s. However, it’s also one of the most confusing lines of shavers out there: countless updates, revisions and model names that make no sense. This radio gear was light-weight for WW2 standards, the CBY-46104 weighs only 6 lbs and is made entirely from aluminum. It is a carefully balanced chassis/radio design for weight minimization (these were installed in aircraft after all) while also remaining rugged and able to provide stable operation across MIL-SPEC temperature ranges and intense vibration. One of the key elements that make a strong case for buying an older and cheaper Arc 5 model is the possibility of upgrading the outer foil later on.

While chronologically these would be third-generation Arc 5’s, I would rather consider them visually updated second-generation shavers (given their features and performance). Those were capable of showing the remaining battery charge in 5% increments and would also display the elapsed time. Firstly, I would like to say: the work you do is incredible, the time you spend to document all these changes and experiences with all these revisions (especially with some being as basic as the reading of the beard density being increased by 13 times per second) is admirable. Your writing is detailed, free from error, and fun to read. In late 1943, the U.S. Navy fielded an improved and more flexible set of its ARA/ATA radios under the new Joint Army-Navy (JAN) nomenclature of AN/ARC-5. Structurally and in appearance, the AN/ARC5 series is almost identical to the former units but both receivers and transmitters are somewhat different electrically. A receiver and transmitter were added that provide four-channel crystal-controlled VHF-AM operation, along with a rarely encountered set of transmitters that provide coverage of 0.5 to 2.1MHz. The caseworking team will need to validate the information you provide before a replacement ARC is issued with amended details.In fact, those inner blades are the same for all Arc 5 generations and revisions ever released, which has major implications for the different replacement foils compatibility (more details later on). The following is a table of ARA/ATA, SCR-274-N, and AN/ARC-5 major components that could comprise a typical three-receiver, two-transmitter installation, with other configurations also being possible. In addition, several miscellaneous components are listed. A blank in the component ID column indicates that no equivalent unit existed for that system. A.R.C. refers to Aircraft Radio Corporation. [4] :3

The model names of most Arc 5 models in a revision include a certain letter and Panasonic has been using this naming scheme consistently since 2015 when they introduced the revision A.This is an area where Panasonic could really learn a thing or two from Braun with their very simple, but effective flexing shaving heads. There is also a new red variation of the ES-LV67, oddly named the ES-ALV6HR. Apart from the color, the two are absolutely identical. When we say design, we tend to only think about the visual part: colors, textures, shapes and so on. It is certainly not normal, but I think things will drastically improve. In my opinion the underwhelming results don’t have a lot to do with the skin getting used to the new method of shaving (that part is mainly in the form of irritation, razor burn etc), but more with you getting to know the shaver and how to get the most out of it. Normally you should be getting a smooth shave without much effort. For example, you’ll sometimes find there’s a significant price difference between the ES-LV65 and ES-LV67 models.

The new Arc 5 Pro continues to be a family of foil electric shavers with 5 active, individual cutting elements. The ES-LV9Q (cleaning station) and ES-LV6Q (no cleaning station) are the best-selling models in this revision. Dynamotors are motor-generators; in my case one end is a spinning motor at 28VDC motor and the other end is a 250VDC generator. Rather than having two motors with two shafts tied together (larger units on ships actually used such configurations) this motor is built into one compact unit with two armatures and two sets of brushes. 28VDC in, 250VDC out all the while spinning like a whirly-bird. the battery level should be above 20%; the shaver can slow down significantly and cause some pulling when the charge drops below 20%-15% The revisions C through J come with an updated design and more flexing capabilities of the shaving head (that doesn’t make any difference in practice). The foils are again slightly better with longer hairs compared to the A and B, the latest revision G, H and J foil being the most capable in that regard.

The third Arc 5 generation also introduced some impressive flexing capabilities of the shaving unit ( revision C and up). The flexible shaving head of the latest Arc 5.

To some users, being able to use a shaver while charging is a must-have feature, so there are two such models: the ES-LV7H (includes a cleaning station) and the ES-LV5H (no cleaning station).

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The B revision was an incremental update and the differences between the B shavers and the previous ones are subtle: